acetic acid vs carboxylic acid

acetic acid and carboxylic acid both are nouns.

Word	Noun	Adjective	Verb	Adverb
acetic acid	Yes	No	No	No
carboxylic acid	Yes	No	No	No

As nouns, carboxylic acid is a hypernym of acetic acid; that is, carboxylic acid is a word with a broader meaning than acetic acid:

acetic acid: a colorless pungent liquid widely used in manufacturing plastics and pharmaceuticals
carboxylic acid: an organic acid characterized by one or more carboxyl groups

acetic acid (noun)	carboxylic acid (noun)
a colorless pungent liquid widely used in manufacturing plastics and pharmaceuticals	an organic acid characterized by one or more carboxyl groups